INHERITANCE OF WAXY ENDOSPERM IN MAIZE. 47 
Ear No. 1130 was a second ear on the same plant that bore No. 
1129, but instead of being the result of self-pollination as was No. 
1129, ear No. 1130 was the result of pollen from a sister plant. The 
plant. that served as the male parent of ear No. 1130 bore a self- 
pollinated ear, No. 1135. This ear No. 1135, had 26.4 per cent white, 
the deviation only slightly exceeding the probable error. 
Since we have already seen that the plant which bore ear No. 
1130 was segregating in a regular Mendelian monohybrid ratio and 
since the male parent was also a close approximation to the mono- 
hybrid ratio, the progeny might also be expected to behave in a 
regular manner. 
There were four classes of seeds on ears Nos. 1129 and 1130— 
colored and white horny and colored and white waxy. The four 
classes were planted separately and crosses made between plants 
erown from the white waxy seeds and plants grown from the col- 
ored horny seeds and also between plants grown from the white 
horny seeds and plants grown from the colored waxy seeds. Self- 
pollinated ears were obtained from all the classes, but since the self- 
pollinated plants grown from white seed resulted in white ears only 
these ears were not tabulated. 
The results of the different crosses were examined separately, but 
since no significant differences were found in the behavior of aleurone 
color between waxy and horny seeds the endosperm textures may be 
disregarded. Further, there appeared to be no significant differ- 
ences between the progeny of the two ears, so that they also may be 
considered together. 
WHITE xX COLORED. 
As the result of pollinating plants grown from the white seeds 
with plants grown from the heterozygous colored seeds of ears 
Nos. 1129 and 1130 thirty ears were obtained (Table X XI). These 
30 ears totaled 14,227 seeds, with 50.1 per cent white. This is a re- 
markably close approximation to the expected 50 per cent. Of the 
30 ears, 16 were below, 13 were above, and 1 equaled the expected 50 
per cent. Three ears deviated in excess of three times the probable 
error, all being above the expected 50 per cent. One of these ears, 
No. 1784, exceeded the expected proportion by 7.3 per cent, and must 
stand as'an exception. A deviation of this magnitude would be 
expected to occur as the result of chance but once in more than 
1,500 times. . 
COLORED x WHITE. 
From the progeny of ears Nos. 1129 and 1130 that were the result 
of pollinating plants grown from the heterozygous colored seeds 
with plants grown from the homozygous white seeds 20 ears were 
obtained (Table XXIT). 
